Attachment for lifting-jacks.



J. G. SASSER & W. T. MeDONALD. ATTACHMENT ron LITTING JAcKs. APPLIATIQNFILED SBPT.5, 190B.

912,737.I Peeentea Feb. 16, 1909.

UNITE@ STATES PATENT @IPIIICIIL JACOB o. sAs'sER AND WILLIAM T.MCDONALD, or MACON, GEORGIA.

ATTACHMENT 4FOR LIFTING-J'ACKS.

Specification of Letters Patent.

Patented Feb. 16, 1909.

Application led September 5, 1908. Serial No. 451,798.

To all whom it may con ccm:

Be it known that we, JACOB C. SAssER and WILLIAu T. MCDONALD, citizensof the United States, residing at Macon, in the county of Bibb andState'of Georgia, have' invent-ed new and useful Improvements inAttachments for LiftingfTacks, of which the following is aspecification.

This invention relates to new and useful im rovements in attachments forlifting jac "s, the attachment being in t-he nature of a vrheel clampfor the purpose of holding down a car Irheel Vduring the operation ofjacking up ajournal box, when it is necessary, yduring travel, toreplace the brasses on account of hot box con( it-ions.

The invention has for its primary ob'ect to provide a novel Wheel clampattac ment which shall be extremely simple and inexpensivein-construction, com aratively light 1nWeight,-readily assemble anddisassembled vlith relation'toY the jack structure, strong `andractical.

Toward t e end of carrying out the above object the novelty of theinvention resides,

v more particularly, in the provision of a rod Which is detachablysecured to the jack standard for lateral adjustment, to compen- .satefor the different lengths of journal boxes in connection u ith u hichthe invention may be employed and in mountinfr upon this rod a -wheelclamp member vvhif is adjustable vertically of the rod, to compensatefor the different diameters of car nheels. Torard the end of coperationith the rod and the clamp member, the form of the jack standard ismodified `some-u hat from the form ordinarily used, the modificationresiding in the provision of a sleeve in v hich is adjustably securedthe angular' end of the rod, and of a projecting lug ulrich serves as aretainer to prevent the clamp member from dropping l O, when thestructure is out of use.

The structural details are set forth in the following description andillustrated in the accompanying drawings, while the novel features ofthe invention will be defined in the claims hereunto appended.

In the said draW1ngs2-Figure 1 is a pers ective view showing theimproved Wheel c amp attachment set up for use. Fig. 2 is a sideelevation, With parts shown in section illustrating the manner of usingthe jack and the wheel clamp attachment.

Similar characters Aot reference refer to corresponding parts throughoutthe views.

The jack'structure comprises the standard 1, having a base flange 2 anda handle 3 at one side thereof. Cooperating with the standard 1 is theusual threadedlifting rod 4 60 provided at its upper end with theenlarged lead 5 having a number of radially disposed openings 6, in anyone of which the handle or lever 7, for turning the rod 4, may be en'-gaged. The head 5 has an axially extending 65 stem 8 which projectsthrough an opening in a supporting cap 9, the latter being held fromaxial displacement by a set screw 10, ulrich is threaded laterallythrough said cap and engages loosely in an annular groove 11 70 in thestem 8. This manner of attaching the cap 9 permits of the latter beingnon-rotatable while the screrwl is being turned. The head 5 is formed onits upper face as a race,- vk ay for ballzbearings 12, upon which awear. 75 ring' 13 is-placed, the latter being carried by. the cap 9 andin turn constituting a bearing. part, should any of the ball bearingsbecome displaced or broken.

'lhe standard 1 is formed at its upper end 80 with a laterally rojectingsleeve 14 and at its lovver end uit a laterally projecting lug 15, whichis disposed above the ilange 2 and is perpendicularly coincident withthe sleeve 14. 85

The Wheel clamp attachment consists ofan L-shapcd rcd 16, preferably ofround cross section and having at its u per end a right angularextension 17 which ts into the sleeve 14 for axial adjustment and isheld in 90 desired positions by a set screw 18, threaded through saidsleeve and frictionally engaging said extension 17. 'Ille wheel clampmember comprises a straight shank 19 terminating in an enlarged integralring portion 2() which loosely surrounds the rod 16 and has its centralopening so proportioned that when the shank 19 is disposed horizontallythe Wheel clamp member may be moved along the rod 16, but when the shank19 is 100 tilted, the Wall Vof the central openin of the ring portion 20will have a frictiona biting engagement upon the rod 16, such bitino'engagement being sufliciently strong to hold the Wheel clamp member fromfurther movement along the rod 16. In use, the jack is positioned undera journal box as A, the Wheel clamp attachment being disposed adjacentthe car Wheel, as B. The shank 19 is engaged upon the 110 annularshoulder, as b, afforded by the dished formation of the face of theWheel B.

CJi

When the parts are so positioned, the shank position to which saidmember may be 19 will have a self-tilting action with the i moved.

result that its ring portion 20 will have the frictional bitingengagement upon the rod 16 as above set forth. It Will thus be seen thatthe shank 19 is immovable on the rod 16 and will consequently hold theWheel B against upward movement with the journal box as the latter iselevated by the rod 4, which is turned by the o erator. ',Ihe lu 15,prevents 'the 'wheel 'c am member dropping or Working oil' t e rod.16,'When the jack is being carried from place to place.

" the standard 1,' in order that the attachment V 'Iheprovision of theextension 1f? and the manner of adjustably engaging the same in thesleeve' 14 permits of a lateral adjustment of the rod 16, that is towardand Aaway from may be readily set up for journal lboxeso'f differentlength. The wheel clamp member may be moved t'o desired positions alongthe rod 16 in. order to com ensate for the differ,

ent diameters of car w eels.

."Ihe attachment is assembled by fitting the wheelclamp member upon therod 16 and vby engaging the extension 17 of theY` latter in the sleeve14. "lhe attachment is i claim l. In combination With a liftingjackstandard, a vertical rod, means for attaching the upper end portion ofthe rod to the standard to permit of lateral adjustment of the rodtowards and away from the standard anda clamp member mounted upon therod for adjustable. movement along the length lockingv engage the rod atany desired thereof, said member being constructed to 2. In combinationWith a lifting jack standard having a 1u projecting at one side Ythereofha vertical ro means for detachably connecting therod to thestandard at one side thereof and above the lug and a clamp memberassembled upon the rod for movep ment to desired positions, said memberbeing held against disassemblage from the rod by said lug.

v3. In

will i1ation` with a lifting jack standard havi'ii'ga' sleeve projectingat one;

side thereof, a rod having an angular extension at one end to fit in thesleeve, a set screw threaded through the sleeve to engage the extension,and a clamp member mounted upon therod for adjustable movement alongthe-length thereof.

4. In combination With a lifting jack standard, having a sleeve,rojecting laterally at one side thereof and having a lug pro'ectinglaterally at one side thereof below sai sleeve, a vertical rod disposedabove the lug and -havin at .its upper end an .,fgigular extension W ichlits into the sleeve,

allel to the standard, and a clamp member 'ni'untednpon the rod foradjustable movement axially thereof, said member being constructed tolockingly engage the rod at any desired position at which it may be set.

1n testimony whereof We have hereunto set our hands in presence of twosubscribing Witnesses.

- JACOB C. SASSER. .l

VV'ILLIAM T. MCDONALD.

Vtiitnesses W. N. SHINHoLsEn, JAMES P. DALY.

